1 Human development is the scientific study of processes of change and stability.  The scientific study of human development began with studies of childhood during the nineteenth century.
verb (used with object), cultivated, cultivating. 1. to prepare and work on (land) in order to raise crops; till. 2. to use a cultivator on. 3. to promote or improve the growth of (a plant, crop, etc.) by labor and attention.
Full Definition of CULT. 1. : formal religious veneration: worship. 2. : a system of religious beliefs and ritual; also: its body of adherents. 3. : a religion regarded as unorthodox or spurious; also: its body of adherents. 4. 5.